How Do I Train Her Not To Bark When I Am Not Home?

My dog sticks to me like glue but she gets very sad when I have to leave her. When she is alone, even when locked in a room alone she barks and barks. She is a Doberman/Pointer/Greyhound mix so, as you can imagine, her bark is rather loud.
Do any of those gimmicks work? Is there any trick to get her to stop barking. It is hard for me to train her to stop when I can’t be in the room.

My Dog Always Barks At Dogs When Were On Walks, The Only Time He Doesnt Bark Is When A Dog Barks At Him!?

hes a german shehperd greyhound crossbreed, and hes just over a year old. we got him at a shelter and hes always been hyper, but hes neutered as well and it hasnt helped with his barking! when I try to get him to socialize he will be overly excited and will scare the dog AND after a while he will start to growl and bark! if i take him to petsmart or a place like that for training, i know hes guna go CRAZYY and bark the whole time, not safe at all because hes so strong! PLEASE HELP!!

Help! How Can I Train My Dog Not To Bark Or Act Aggressive When Someone Comes To The Door?

He is an Itailian Greyhound mix and has extreme high anxiety